/*
 * SonarQube
 * Copyright (C) 2009-2023 SonarSource SA
 * mailto:info AT sonarsource DOT com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package org.sonar.server.platform.db.migration.version.v00;

import java.sql.SQLException;
import java.util.Arrays;
import java.util.Date;
import java.util.List;
import org.sonar.api.utils.System2;
import org.sonar.core.platform.SonarQubeVersion;
import org.sonar.core.util.UuidFactory;
import org.sonar.db.Database;
import org.sonar.server.platform.db.migration.step.DataChange;
import org.sonar.server.platform.db.migration.step.Upsert;

import static java.util.Arrays.stream;
import static java.util.Objects.requireNonNull;
import static java.util.stream.Collectors.joining;
import static java.util.stream.Stream.concat;
import static java.util.stream.Stream.of;

public class PopulateInitialSchema extends DataChange {

  private static final String ADMINS_GROUP = "sonar-administrators";
  private static final String USERS_GROUP = "sonar-users";
  private static final String ADMIN_USER = "admin";
  private static final String ADMIN_CRYPTED_PASSWORD = "$2a$12$uCkkXmhW5ThVK8mpBvnXOOJRLd64LJeHTeCkSuB3lfaR2N0AYBaSi";
  private static final List<String> ADMIN_ROLES = Arrays.asList("admin", "profileadmin", "gateadmin", "provisioning", "applicationcreator", "portfoliocreator");

  private final System2 system2;
  private final UuidFactory uuidFactory;
  private final SonarQubeVersion sonarQubeVersion;

  public PopulateInitialSchema(Database db, System2 system2, UuidFactory uuidFactory, SonarQubeVersion sonarQubeVersion) {
    super(db);
    this.system2 = system2;
    this.uuidFactory = uuidFactory;
    this.sonarQubeVersion = sonarQubeVersion;
  }

  @Override
  public void execute(Context context) throws SQLException {
    String adminUserUuid = insertAdminUser(context);
    Groups groups = insertGroups(context);
    String defaultQGUuid = insertQualityGate(context);
    insertInternalProperty(context);
    insertProperties(context, defaultQGUuid);
    insertGroupRoles(context, groups);
    insertGroupUsers(context, adminUserUuid, groups);
  }

  private String insertAdminUser(Context context) throws SQLException {
    truncateTable(context, "users");

    long now = system2.now();
    context.prepareUpsert("insert into users " +
      "(uuid, login, name, email, external_id, external_login, external_identity_provider, user_local, crypted_password, salt, hash_method, reset_password, " +
      "created_at, updated_at)" +
      " values " +
      "(?, ?, 'Administrator', null, 'admin', 'admin', 'sonarqube', ?, ?, null, 'BCRYPT', ?, ?, ?)")
      .setString(1, uuidFactory.create())
      .setString(2, ADMIN_USER)
      .setBoolean(3, true)
      .setString(4, ADMIN_CRYPTED_PASSWORD)
      .setBoolean(5, true)
      .setLong(6, now)
      .setLong(7, now)
      .execute()
      .commit();

    String res = context.prepareSelect("select uuid from users where login=?")
      .setString(1, ADMIN_USER)
      .get(t -> t.getString(1));
    return requireNonNull(res);
  }

  private void insertInternalProperty(Context context) throws SQLException {
    String tableName = "internal_properties";
    truncateTable(context, tableName);

    long now = system2.now();
    Upsert upsert = context.prepareUpsert(createInsertStatement(tableName, "kee", "is_empty", "text_value", "created_at"));
    upsert
      .setString(1, "installation.date")
      .setBoolean(2, false)
      .setString(3, String.valueOf(system2.now()))
      .setLong(4, now)
      .addBatch();
    upsert
      .setString(1, "installation.version")
      .setBoolean(2, false)
      .setString(3, sonarQubeVersion.get().toString())
      .setLong(4, now)
      .addBatch();
    upsert
      .execute()
      .commit();
  }

  private void insertProperties(Context context, String defaultQualityGate) throws SQLException {
    var tableName = "properties";
    truncateTable(context, tableName);

    long now = system2.now();
    var upsert = context
      .prepareUpsert(createInsertStatement(tableName, "uuid", "prop_key", "is_empty", "text_value", "created_at"));

    upsert.setString(1, uuidFactory.create())
      .setString(2, "sonar.forceAuthentication")
      .setBoolean(3, false)
      .setString(4, "true")
      .setLong(5, now)
      .addBatch();

    upsert
      .setString(1, uuidFactory.create())
      .setString(2, "projects.default.visibility")
      .setBoolean(3, false)
      .setString(4, "public")
      .setLong(5, system2.now())
      .addBatch();

    upsert
      .setString(1, uuidFactory.create())
      .setString(2, "qualitygate.default")
      .setBoolean(3, false)
      .setString(4, defaultQualityGate)
      .setLong(5, system2.now())
      .addBatch();

    upsert
      .execute()
      .commit();
  }

  private Groups insertGroups(Context context) throws SQLException {
    truncateTable(context, "groups");

    Date now = new Date(system2.now());
    Upsert upsert = context.prepareUpsert(createInsertStatement(
      "groups",
      "uuid", "name", "description", "created_at", "updated_at"));
    upsert
      .setString(1, uuidFactory.create())
      .setString(2, ADMINS_GROUP)
      .setString(3, "System administrators")
      .setDate(4, now)
      .setDate(5, now)
      .addBatch();
    upsert
      .setString(1, uuidFactory.create())
      .setString(2, USERS_GROUP)
      .setString(3, "Every authenticated user automatically belongs to this group")
      .setDate(4, now)
      .setDate(5, now)
      .addBatch();
    upsert
      .execute()
      .commit();

    return new Groups(getGroupUuid(context, ADMINS_GROUP), getGroupUuid(context, USERS_GROUP));
  }

  private static String getGroupUuid(Context context, String groupName) throws SQLException {
    String res = context.prepareSelect("select uuid from groups where name=?")
      .setString(1, groupName)
      .get(t -> t.getString(1));
    return requireNonNull(res);
  }

  private String insertQualityGate(Context context) throws SQLException {
    truncateTable(context, "quality_gates");

    String uuid = uuidFactory.create();
    Date now = new Date(system2.now());
    context.prepareUpsert(createInsertStatement("quality_gates", "uuid", "name", "is_built_in", "created_at", "updated_at"))
      .setString(1, uuid)
      .setString(2, "Sonar way")
      .setBoolean(3, true)
      .setDate(4, now)
      .setDate(5, now)
      .execute()
      .commit();
    return uuid;
  }

  private record Groups(String adminGroupUuid, String userGroupUuid) {
  }

  private void insertGroupRoles(Context context, Groups groups) throws SQLException {
    truncateTable(context, "group_roles");

    Upsert upsert = context.prepareUpsert(createInsertStatement("group_roles", "uuid","group_uuid", "role"));
    for (String adminRole : ADMIN_ROLES) {
      upsert
        .setString(1, uuidFactory.create())
        .setString(2, groups.adminGroupUuid())
        .setString(3, adminRole)
        .addBatch();
    }
    for (String anyoneRole : Arrays.asList("scan", "provisioning")) {
      upsert
        .setString(1, uuidFactory.create())
        .setString(2, groups.userGroupUuid())
        .setString(3, anyoneRole)
        .addBatch();
    }
    upsert
      .execute()
      .commit();
  }

  private static void insertGroupUsers(Context context, String adminUserUuid, Groups groups) throws SQLException {
    truncateTable(context, "groups_users");

    Upsert upsert = context.prepareUpsert(createInsertStatement("groups_users", "user_uuid", "group_uuid"));
    upsert
      .setString(1, adminUserUuid)
      .setString(2, groups.userGroupUuid())
      .addBatch();
    upsert
      .setString(1, adminUserUuid)
      .setString(2, groups.adminGroupUuid())
      .addBatch();
    upsert
      .execute()
      .commit();
  }

  private static void truncateTable(Context context, String table) throws SQLException {
    context.prepareUpsert("truncate table " + table).execute().commit();
  }

  private static String createInsertStatement(String tableName, String firstColumn, String... otherColumns) {
    return "insert into " + tableName + " " +
      "(" + concat(of(firstColumn), stream(otherColumns)).collect(joining(",")) + ")" +
      " values" +
      " (" + concat(of(firstColumn), stream(otherColumns)).map(t -> "?").collect(joining(",")) + ")";
  }

}
